I. Introduction: The purpose of the case study is to determine which of the patient’s cranial nerve(s) are damaged. The human brain and brain stem contain eleven pairs of cranial nerves to the neck and head, and one pair of cranial nerves to the abdomen and thorax. Each cranial nerve is numbered by a Roman numeral and in sequential order from cranial to caudal: (I) olfactory nerve carries sensory information to the brain and is responsible for the nose; (II) optic nerve carries sensory information to the brain and is responsible for the eyes; (III) oculomotor carries motor commands from the brain and is responsible for the eyes; (IV) trochlear nerve carries motor commands from the brain and is responsible for the eyes; (V) trigeminal nerve
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Test four tests for pupillary reflex. The participant closes both eyes for a few seconds, then a light stimulus from 20 centimeters away is shined into their eyes, and the observer records whether pupil constricted, and if the responses was performed simultaneously (Bluedoor). Test five tests for accommodation. The participant visually follows an object from one meter away until it is …show more content…
The trochlear nerve assesses the participant’s eyes for symmetrical and smooth movement when asked to look down at the tip of their nose (Bluedoor). Since the trigeminal nerve consists of motor and sensory components, two tests are performed to stimulate the nerve. Test one tests motor function; the participant is asked to clench their jaw down while the observer palpates the temporalis and masseter muscles on both sides and looks for symmetrical contraction strength (Bluedoor). Test two evaluates sensory function in three divisions of the trigeminal nerve: ophthalmic division (V1), maxillary division (V2) and mandibular division (V3) (Bluedoor). With the participant’s eyes closed, they indicate if they feel a Von Frey hair lightly touch all three divisions on both sides of their face. This is then repeated with a cold mall probe that has been submerged in ice and a warm mall probe that has been submerged in water at 45.4 degrees Celsius (Bluedoor). The abducens nerve is stimulated as the participant moves their eyes left and right, while observer looks for smooth and symmetrical movement; these assessments test the motor
Test four tests for pupillary reflex. The participant closes both eyes for a few seconds, then a light stimulus from 20 centimeters away is shined into their eyes, and the observer records whether pupil constricted, and if the responses was performed simultaneously (Bluedoor). Test five tests for accommodation. The participant visually follows an object from one meter away until it is …show more content…
The trochlear nerve assesses the participant’s eyes for symmetrical and smooth movement when asked to look down at the tip of their nose (Bluedoor). Since the trigeminal nerve consists of motor and sensory components, two tests are performed to stimulate the nerve. Test one tests motor function; the participant is asked to clench their jaw down while the observer palpates the temporalis and masseter muscles on both sides and looks for symmetrical contraction strength (Bluedoor). Test two evaluates sensory function in three divisions of the trigeminal nerve: ophthalmic division (V1), maxillary division (V2) and mandibular division (V3) (Bluedoor). With the participant’s eyes closed, they indicate if they feel a Von Frey hair lightly touch all three divisions on both sides of their face. This is then repeated with a cold mall probe that has been submerged in ice and a warm mall probe that has been submerged in water at 45.4 degrees Celsius (Bluedoor). The abducens nerve is stimulated as the participant moves their eyes left and right, while observer looks for smooth and symmetrical movement; these assessments test the motor